Express the product as a sum containing only sines or cosines.-2 sin(5?) sin ?
A. cos(6?) + cos(4?)
B. cos(7?) - cos(3?)
C. cos(6?) - cos(4?)
D. cos(7?) + cos(3?)
Answer: C
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At the given point, find the slope of the curve or the line that is tangent to the curve, as requested.5x2y - ? cos y = 6?, tangent at (1, ?)
A. y = ?x
B. y = -2?x + 3?
C. y = - 
x + 
D. y = -2?x + ?
Find the surface area of the geometric solid. If needed, use 3.14 as an approximation for ? and round the answer to the nearest tenth.Cone: r = 5 yd, h = 7 yd
A. 153.9 yd2 B. 213.6 yd2 C. 78.5 yd2 D. 109.9 yd2
Name the move on Rubik's Cube that will return the cube to standard position after making the move R. ?
A. B-1 B. R2 C. R-1 D. BR E. R3
Identify the property illustrated by the statement. Assume all variables represent real numbers.(9 + 4) + 7 = (4 + 9) + 7
A. Distributive B. Closure C. Associative D. Commutative